About Us

Why Choose Us

Family-Run Multihull Agency with

45 Years Experience

Welcome To Robert Underwood Multihulls, The UK’s Most Experienced Multihull Service.

With over 45 years’ experience in the design, construction and sale of catamarans we are uniquely placed to advise you on any aspect of your multihull requirements, be it sail or power.

Rumulti is an independent source for multihull customers, offering the full range of services backed up by years of hands-on experience in all areas of multihull sales, design and construction.


Offering full 360-degree

Multihull Services

We specialise in:

  • Multihull brokerage
  • New boat sales and commissioning
  • Project management
  • Consultancy

We can also help facilitate most other services such as yacht surveys for pre-sale, post-purchase and tonnage, along with arranging delivery services and/or crew for transporting your boat to wherever you need it to be.

Trusted Advisors

Independent Advice

We are able to advise on the suitability of most of the modern multihulls available today so please contact us if you need independent advice on any make or model. We can find and facilitate the purchase of the most suitable multihull for your specific needs. From our vast experience of Catana, Bali, Sunreef, Broadblue & Prout Catamarans we are best placed to offer specialist advice for any of their models.

Exclusive Partnerships with

Leading Manufacturers

We are official European Agents for the phenomenal HH Catamarans, working with our partners at Multicats International – not only for their state of the art, carbon fibre, high-performance range of catamarans but also for their new breed of sleek, beautiful, performance cruising catamarans. The Ocean Series.

Drawing inspiration from the original HH Catamarans line, The Ocean Series delivers safe, blue-water capable, luxury cruising catamarans at a fraction of the cost and build time. The shared pedigree is evident: Morrelli & Melvin design and engineering, state-of-the-art boat building processes, and a careful eye for aesthetics and finish quality endure. Combining the strengths of the HH brand with new production efficiencies, the Ocean Series makes the dream of sailing the world’s oceans on a fast, beautiful cruising catamaran more attainable than ever.

HH Catamarans builds a line of semi-custom 50-88 foot models that are unlike any others in the market due to their unique team: an award winning design group, a master boat builder with advanced composites experience, and the substantial resources of a manufacturing powerhouse with credibility and longevity.

Custom Made

Luxury Catamarans

We are also very proud to be UK & European agents for the world’s leading manufacturer of custom-made luxury catamarans. Sunreef Yachts is considered to be the world’s leading designer and manufacturer of luxury sailing and power multihulls. Each custom-made yacht is designed in great detail for the most demanding customers and delivers the best in comfort, style and safety. Every yacht boasts excellent sailing, luxurious accommodation, vast living spaces, with extravagant and innovative design features.